Any MicroSD should work. SDHC should work up to 16gb as well.
BlackBerry Device Software Media Card Size Limit
BlackBerry Device Software 4.2.0 -- Up to 2 GB
BlackBerry Device Software 4.2.1 -- Up to 4 GB
BlackBerry Device Software 4.2.2 -- Up to 4 GB
BlackBerry Device Software 4.3.0 -- Up to 8 GB
BlackBerry Device Software 4.5.0 -- Up to 8 GB
BlackBerry Device Software 4.5.0.81 and above -- Up to 16 GB
BlackBerry Device Software 4.6.0 -- Up to 16 GB
08-03-09 03:54 AM